♫Click Here to buy the 【Donner Piano Classic Collection】 Product Function Strong Bearing Force The high density of the sponge keeps it from deforming and can support up to 300 pounds of weight. Hard Solid Wood The hard solid wood material makes continuous use without deformation. Velet Cushion Waterproof Outer Layer，Cleaned by Wet Towel Dustproof Velvet The selected velvet is used as a piano stool lining effectively protecting your sheet music from getting dirty.